rear upright assy

[onedayTM]

Hi all, I am just about to finish welding rear uprights and I seem to remember that there was an issue with getting handbake cable into hole in backing plates with drum brakes. Was the solution of just trimming the plate RU1 the answer?
I cannot find thread relating to this so would welcome any answers from those who have already done ther's.
cheers
tony

[ozzy1]

I thought it was an issue with disc rear brakes.

[onedayTM]

hi ozzy, it looks like it will be a really tight fit to get the cable in and I don't want to finish welding before checking. I could do with clrarification before taking to college tomorrow, last nite as well!
cheers

[gaz05]

This is how I did mine.

http://www.haynes.co.uk/forums/showthread.php?p=50812#post50812

[alga]

It is a bit tight, but I guess you can grind out some space if you want a bit later, before painting the uprights. Or you can do without it, the backing plate will flex and conform anyway.

[onedayTM]

thanks for replies guys.
tony

[Bonzo]

Hi Tony

Have a look at this photo ( Not the best I know )

http://i274.photobucket.com/albums/jj266/Bonzoronnie/hub1.jpg

You should be able to see where the handbrake cable enters the drum backplate.

With an " as per book " upright, you may need to fettle a notch in the uprights lower mounting lug to allow the handbrake cable ferrule to fit into the drums backplate.

I had to cut a notch in the first set of uprights that I made.

It was also noticed that the drums slave cylinder was very close to the upper upright mounting lug, this may make it a little tricky to get the solid section of brake pipe fitted.

Just to clarify to all

This photograph is of my revised rear upright. :)

Reason why I changed it ?

In the first edition of the book, it was stated that the driveshafts were shortened by 10mm & that it was probably best to make the rear wishbones 10mm longer to allow the use of standard driveshafts.

This never really sat with me very well, from a fabricators view, why would you shorten a driveshaft by only 10mm, when it would have been far easier to allow for the extra length elsewhere. ?

The book shows that RU7 fits inside & flush with the end of the piece of 5" pipe ( RU5 )

Having convinced myself that this was wrong & that's where the missing 10mm went to, I then took the personal choice to fabricate the rear uprights slightly different.

Here's how I made the rear upright pictured.

I sat RU7 on top of the 5" pipe ( RU6 ), taking great care that it was level in all directions.

Tacked RU8 on top of the assembly & fully welded the whole thing up.

This allowed 10mm extra distance from drum back plate & the mounting lugs of the upright.
I gained extra clearance for both handbrake cable & solid pipe to master cylinder.

The same effect could have been achieved by simply making as per book & adding an extra RU8 to each upright.

Impotrant

If making the rear uprights the same way as I did, the length of the rear wishbones will need to be as per original book spec.

Hope all of this makes sense :)

[robo]

Proof that a picture says a thousand words:)

bob

[voucht]

Hi,
You can also weld RU8 like on Talonmotorsport's uprights. Here is a picture of the ones I bought from him. I guessed the upper part is leaning backward, and lower part frontward, so you have room for the hand-brake cable, and the bleeder of the wheel cylinder is still higher than the port. It also allows you, I think, to fit flexible brake lines with a straight male fitting (drum end) without any other transformation, extra bracket/copper pipe, and so on, which actually a big upside too.
Hope this will help.
Bye.
Sylvain

1484

[flyerncle]

Correct me if wrong Slyvain,is that not for a disc setup in that picture.

[voucht]

Correct me if wrong Slyvain,is that not for a disc setup in that picture.

I hope not :confused:
Actually, RU8 for drum is horizontal, and for disc it is vertical. I think Talon makes this "in between" orientation of RU8 to avoid the problem explained above, and perhaps also (but I'm not sure of that) to use the same uprights for both drum and disc settings.
I ordered the uprights for drum brakes, and that is just what I thought when I received them... sh... I hope they are OK for drums, and as I don't have my brakes yet, I can't even try :eek:
But they should be OK as, as long as the bleeder is at the highest point, it works in any position.

[flyerncle]

It just looks odd as there is no problem with fitting the cylinder at the top apart from the slight clearance issue with the inlet to the cylinder,it would look as that setup is for a caliper as you need clearance for the handbrake mech on the rear and that fouls the upright,it also defies everything I ever learnt regarding leading and trailing shoe setup's in the 40 years I have spent in the motor trade,the cable entry would also be a bit of an angle too.

There is an obvious answer and I am interested as to what it is.

[voucht]

Ok, I just wrote to Phil about that, hope he will come back to me. I'll keep you posted.
Thanks.

[voucht]

Just got the reply from Phil (Talonmotorsports), and yes, the uprights on the picture I published are suitable for both disc and drum set ups, they have been checked many times, we can trust Phil on that matter, I think he has sold more than a pair!
Hope this answers your question :)
Thank you.

[onedayTM]

thanks again for replies wish I had seen them before night at college. never mind
welded as book and just took bit out to clear cable, will see how I get on with cylinder fittings later.
I see why you did yours that way ronnie pity I didnt ask this question before tacking them up last week, oh well just another mistake along the way.
cheers
tony.

[flyerncle]

All sorted................;)